Storage-battery grid.



J. N. DAVIS.

STORAGE BATTERY. GRID.

APPLICATION FILED 1111111. 17, 1913.

1,0?Q927, Patented Oct. 21, 1913.

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Application filed Merck l'i', 1918. Serial N6. 755,010;

To all vhom it may concern: v

Be it known that I, JASPER N. DAVIS, a citizen of the United State of America, residing in the city and county of Denver and State of Colorado, have invented a new and useful Storage-Battery Grid, of which the followingis a specification. 4

My invention relates to improvements 1n storage battery grid construction;

The object of the invention is to provide a grid, the outer supporting frame oi which has a special construction adapted" to re ceive on the outer surfztoe an insulation adhered thereto, the purpose of said insulation being embodied in my application for pet" ent Serial Number 700,002, filed May 27, 1912, This improvement consists in giving the body portion or that part which receives the active material, a greater depth or thickness than to the outer main supporting frame of the grid, as compared to the presentconstruction, but in no wise diminishing the strength, as will be shown in the following illustrated drawings:

Figure 1, is a side view of a storage batltry grid before the active material isapplied, my improvement being confined to-the outer four sides. Fig. 2, is an enlarged vertical sectional view of it portion of one side of thegrid, showing more clearly the con struction of the outer supporting bQQThriving the zigzag web. Fig. 3 is a viewer-Inildi' to Fig. 2,- showing this section of the grid as it appears efter the insulat ng mater al has been applied, the insulating mater al which adheres to the framebeing flush with the cross bars of the inner grid. Fig. 4, 1s i1 horizontal sectional view on the line 4-4 of Fig; 1. And Fig. 5; is a horizontal sectional view of a completed grid,-- on the line 5 5 of Fig. 1.

The same reference characters indicate the same parts in all theviews.

The letter A designates the grid of a storagebettery before the active mdtei'ial B hos been a plied.

1 designates t e vertical bars, and 2 the cross bars. The vertical bars 1 and the cross bars 2 may be of any design, as my .im-

movement is confined to it special construction of the outer frame or supporting bars 3, 4,- 5 and 6 of the grid,- and the manner in which the cross retaining bars 1 and 2 tie secured to the said frame;

@ The sides and ends ofthe' outer surround ihg frame are of less thickness'than the thickness of the grid portion, to allow for the thickness of an insulation 10, which I will explain further on. As the frame members are of less thickness than the grid proper,

which would tend to weaken the cross bars 2, a counter support? is provided in form of inner-zigzag rojections of the outer side bars I} gtnd 6, w ich. are integral with the cross bars 2, the object being to give the cross bars 2 a rigid support and connection with the side bers of the frame, "which they alone wouldnot give suflicient strength to them without their. connection with the zigzag web supports 7 I The upright bars 1 in the drawing, are less in numbers than the bars 2, and of a width corresponding to the full depth of the grid, and while their ends may be connected to the framein the same rminner as the ends of the bars 2, I do not confine myseli to this method of connecting their ends or those of the bars 2 to the frame, as there are many forms of inner grid construction on the market, for retaining the fictive material in place, and any form of support maybe used to. secure them to the outer supporting bar at the four sides of the grid. In Fig. 4, however, is shown a bevel footing 9 on each side of the upright bars 1, which strengthens their connection with the upper and lower frame members; These members 3 end 6-, are also formed with integral lofigitiidinal webs or extensions 3 and 6 res actively, which project from their inner e ge's, and which are preferably tapered in cross section as shown in Figs.- 2 and 3. These webs are also integrally connected to the uprights l, where they unite with the frame members 3, end they not only serve as an additional strengthening medium for the ends of the said upri hts', but they also to: as dividing wells for t e hisulating-mnterial 10,;whichsurrounds these frame members,-the sir-id materiel adhering to their opposite sides, as clearly shown in Fig. 3, while the webs are or slightly greater depth than the thickness'of the insulatare material. The recsonfoiusing-these supports 3' and 6 is thetothcrw'isethe point words, without this form of connection, the

union of the barsland 2 with the side bars of the frame, would not be sufricient'for the purpose required. Therefore, inorder to give therequired strength, and current car- 'rying capacity, to the bars or active material retainers 1 and 2, their ends are connected to the frame in the manner above described, theinner support-ing webs of the bars 1, and

the-zigzag bars 7, being an integral part of the outer frame. The inner edges of the supports 7 and the webs 3 and 6*, also come in touch .with the active material of the plate, which is an advantage. The outer frame being of less thickness than the depth of the grid, permits a sufficiently thick body of a suitable insulating material 10 to be secured rigidly to the outer supporting frame and supports 7 and webs 3 and 6 to prevent the same from being attackedby the acid,or solution of the storage battery cells during their working conditions, thus preventing the so-called moss-grown or oozing out of the negative plate to such an extent as to reach across the separators on the outer four sides and-come in contact with the positive plates, which short-circuits the cellsw On the-topsof the negative plates also, the greater damage is done in short circuitlng the cells, by the said moss-grown or f oozing out portions coming in contact with the positive plate connecting strap which extends across the top of the elements at right angles to the, plates, It is Well known by those familiar with batteries that short-circuited cells shorted from the latter. cause, are more serious than from all other causes, excepting, of course, shorted cells due to the, accumulation in the bottom of the jars of the disintegrated active material from the positive plates. But this is no more injurious to the elements than the-short cirfrom the moss-grown or oozing out of the outer supporting frame of the negative plate grid. By eliminating the possibility of the short-circuit caused by the latter condition, which can be accomplished by the construction of the outer grid of the storage battery plate as I have herein illustrated and explained,the expense for maintaining a lead storage battery-is reduced to a minimum, and the life. is increased to a maximum, the expense'of'labor being thereby reaccomplished by maintalning a uniform duced. Increasing the life of the battery is working condition. of each cell, due to the thereon, prevents contact with the outer exposed portion of the negative plate with the disintegrated active material.

Having thus described the nature and object of my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In storage battery grid construction, the combination with a supporting frame, of inner activeunaterial retaining members having at their intersection with "the outer supporting frame, connecting members which extend across the inner edges of the vertical members of the frame, and which are also an integral part of said frame, said frame being of less thickness than the depthof the retaining members and embedded'in an insulating material. I

2. In a storage battery grid, a rectangular frame havingintegral zigzag webs on the inner edges of its opposite side members, the

which are integrally, connected at their ends -with the apexes of said. zigzag webs, and

vertical bars integral with thetransverse bars and with the frame and -pfagreater width than the thickness of the frame, said frame having a coating of insulating material.

In a storage battery grid, a rectangular frame, bars extending across the frame on opposite sides thereof,- ,aud in alternate order, and projections on the inner edges of the frame, integral therewith, and with the ends of the said bars, said frame being coatedwith an insulating material which is flush withthe outer surfaces of the bars.

4. In a storage battery grid, a rectangular frame having integral uprightbars of greater width than the thickness of the frame, integral zigzag webs on the inner opposing edges of the vertical members of the frame, the apexes of which project be yond the faces of said side. members, and

bars extending across said frame on opposite sides thereof, the ends of which are intogrally connected with the apexes of said zigzag webs, said frame being embedded in an insulating material which is flush with the outer faces of said bars and fills the recesses formed by saidizigzag web.

In a storage battery grid, a frame embedded in non-conducting material, and having integral bars extending across its oppo-- site sides in alternate order, and; from the inner opposing edges of opposite members of said frame, the outer surfaces of which are flush with the outer surface of said insulating material, bracing Webs on said o'pposing edges, integral with the said edges and with the ends of the alternating bars, and bars at right angles to the alternating bars integral therewith, and with the frame," and jof a width corresponding to the greatest depth of the frame.

3. A storage battery grid comprising in one integral structure, a rectangular frame, zigzag ribs on the inner edges of the side members of the frame, bars connecting the apexes of one zigzag rib with those of the opposite rib, the-space between the outer faces of the alternate bars being greater than the thickness of the frame members, and bars connecting the end members of the frame, said frame members being embedded in an insulating material which on opposite sides of the frame is flush with the outer surfaces of the said bars.

7. A storage battery grid comprising in one integral structure, a rectangular frame,

raised bars on one side of the frame, eon necting the inner edges of its side members,

lating material which on the opposite side is flush with the outer surfaces of said bars.

8'. In a storage'battery grid,a rectangular fraine, integral alternating horizontal bars on opposite sides thereof, and'vertical bars 45,

integral with the horizontal bars and with the upper and lower frame members, said members also having integral webs on' their inner edges which are also integrally connected to said vertical bars at thei' point of 50 unison with the upper and lower fran'ie members, said frame being of css t. i knees than the depth defined by saEJ ver 31 and horizontal bars, and a coating of insulating material surrounding the members of said 55 frame and flush with the outer surfaces of said bars.

In testimony whereof I affix my; signature in presence of t o witnesses.

JASPER N. T Y

Witnesses MARY DAVIS, PRESTON DAVIS.

@oples of this patent may be obtaineffor five cents'each, by addressing the "Commissioner of Patents.

Washington, D. C. 

